How do you change the size or position of your default pic on facebook?

what i mean by that is like, the picture you see when you write on somebody's wall.



i know it's possible, but i don't know how to...How do you change the size or position of your default pic on facebook?
You can only change the position, not the size. On your Facebook home, click on the edit button next to the profile link in the top left hand corner, then click on picture second to the left on the next page. Under thumbnail version, you can drag the picture around to change its position.

Here's a quick link:

http://hs.facebook.com/editprofile.php?p鈥?/a>